Hexamethylditin
- Formula: C6H18Sn2
- Molecular weight: 327.627
- IUPAC Standard InChIKey: CCRMAATUKBYMPA-UHFFFAOYSA-N
- CAS Registry Number: 661-69-8
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: ((CH3)3Sn)2; Distannane, hexamethyl-; Hexamethyldistannane; Pennsalt TD 5032; Stannane, hexamethyldi-; TD 5032; Trimethyltin dimer; Tin, hexamethyldi-; Distannane, 1,1,1,2,2,2-hexamethyl-; NSC 227328
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: José A. Martinho Simões
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -26.9 ± 8.8 | kJ/mol | Review | Martinho Simões | The enthalpy of formation relies on -185.5 ± 3.7 kJ/mol for the enthalpy of formation of Sn(Me)3(Br)(l). |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: José A. Martinho Simões
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -77.1 ± 7.7 | kJ/mol | Review | Martinho Simões | The enthalpy of formation relies on -185.5 ± 3.7 kJ/mol for the enthalpy of formation of Sn(Me)3(Br)(l). |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to C6H18Sn2+ (ion structure unspecified)
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
7.8 | PE | Granozzi, Bertoncello, et al., 1985 | LBLHLM |
8.0 | PE | Szepes, Koranyi, et al., 1981 | LLK |
8.02 ± 0.15 | EI | Lappert, Pedley, et al., 1971 | LLK |
8.20 | PE | Mochida, Worley, et al., 1985 | Vertical value; LBLHLM |
8.21 | PE | Granozzi, Bertoncello, et al., 1985 | Vertical value; LBLHLM |
8.20 | PE | Szepes, Koranyi, et al., 1981 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C3H9Sn+ | 9.51 ± 0.22 | (CH3)3Sn | EI | Lappert, Pedley, et al., 1971 | LLK |
C3H9Sn+ | 9.82 ± 0.15 | ? | EI | Yergey and Lampe, 1968 | RDSH |
C3H9Sn+ | 9.65 | ? | EI | Yergey and Lampe, 1968 | RDSH |
C5H15Sn2+ | 8.17 ± 0.03 | CH3 | EI | Yergey and Lampe, 1968 | RDSH |
C6H18Sn2+ | 7.42 ± 0.02 | ? | EI | Pitt, Bursey, et al., 1970 | RDSH |
C6H18Sn2+ | 8.08 ± 0.02 | ? | EI | Yergey and Lampe, 1968 | RDSH |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Martinho Simões
Martinho Simões, J.A.,
Private communication (see http://webbook.nist.gov/chemistry/om/). [all data]
Granozzi, Bertoncello, et al., 1985
Granozzi, G.; Bertoncello, R.; Tondello, E.; Ajo, D.,
He(I)/He(II) Sn 5p photoionization cross sections: Definitive evidence from the spectra of Sn2(CH3)6,
J. Electron Spectrosc. Relat. Phenom., 1985, 36, 207. [all data]
Szepes, Koranyi, et al., 1981
Szepes, L.; Koranyi, T.; Naray-Szabo, G.; Modelli, A.; Distefano, G.,
Ultraviolet photoelectron spectra of group IV hexamethyl derivatives containing a metal-metal bond,
J. Organomet. Chem., 1981, 217, 35. [all data]
Lappert, Pedley, et al., 1971
Lappert, M.F.; Pedley, J.B.; Simpson, J.; Spalding, T.R.,
Bonding studies of compounds of boron and the Group IV elements. VI. Mass spectrometric studies on compounds Me4M and Me3M-M'Me3 (M and M'=C, Si, Ge, Sn, and Pb): thermochemical data,
J. Organomet. Chem., 1971, 29, 195. [all data]
Mochida, Worley, et al., 1985
Mochida, K.; Worley, S.; Kochi, J.,
UV photoelectron spectra of peralkylated catenates of Group 4B elements (silicon, germanium, and tin),
Bull. Chem. Soc. Jpn., 1985, 58, 3389. [all data]
Yergey and Lampe, 1968
Yergey, A.L.; Lampe, F.W.,
An electron impact study of ionization and dissociation of trimethylstannanes,
J. Organometal. Chem., 1968, 15, 339. [all data]
Pitt, Bursey, et al., 1970
Pitt, C.G.; Bursey, M.M.; Rogerson, P.F.,
Catenates of the group IV elements. Correlation of σ electron energies,
J. Am. Chem. Soc., 1970, 92, 519. [all data]
Notes
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- Symbols used in this document:
AE Appearance energy ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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